This interactive scatter plot cycles through the Iris dataset's four numeric columns every two seconds, using the selected column for the x-axis while the y-axis remains fixed. Built as a reusable D3 module, the chart employs `scaleLinear`, `extent`, `axisLeft`, and `axisBottom` to render SVG circles and axes, with the animation driven by `setInterval`. The Iris flower measurements are loaded via D3's `csv` from a GitHub Gist, and the full viewport is filled by the plot.